package org.example.netty.codec;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

import java.util.Random;

public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    private final Random rnd = new Random();

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        StudentPOJO.Student stu = StudentPOJO.Student.newBuilder().setId(rnd.nextInt()).setName("豹子头 林冲").build();
        ctx.writeAndFlush(stu);
    }

    /**
     * 当通道有读取事件时，
     * 会触发
     *
     * @param ctx
     * @param msg
     *
     * @throws Exception
     */
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        //super.channelRead(ctx, msg);
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息：" + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址：" + ctx.channel().remoteAddress());
    }


    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        //super.exceptionCaught(ctx, cause);
        cause.printStackTrace();
        ctx.close();
    }
}
